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Graphcore is seeking a Signal Integrity Measurement Engineer to validate signal integrity (SI) and power integrity (PI) for advanced compute platforms. This role combines hands-on measurement, electrical compliance testing, troubleshooting, and simulation correlation work across board-to-board, cable, backplane, blade-, and rack-level interconnects.
Key responsibilities include:
- Develop measurement plans and design of experiments (DOE) for interconnect validation at multiple system levels
- Measure scattering parameters (S-parameters), insertion loss, return loss, impedance, crosstalk, eye diagrams, jitter, timing margins, and bit error rates
- Design PCB test fixtures and perform calibration, de-embedding, and electrical compliance testing against interface specifications and customer requirements
- Correlate measurements with simulations and troubleshoot issues across silicon, package, board, and system teams; work with interconnect vendors and original design manufacturers (ODMs)
- Prepare comprehensive validation and compliance reports documenting methods, pass/fail results, performance margins, findings, and recommendations
You will work with experienced technical leaders and interconnect partners to improve high-performance compute hardware, with exposure to data center and hyperscale infrastructure.
REQUIREMENTS:
- Hands-on expertise with vector network analyzers (VNAs), performance network analyzers (PNAs), time-domain reflectometers (TDRs), bit error rate testers (BERTs), and high-speed oscilloscopes
- Strong SI/PI fundamentals with experience in fixture characterization, repeatable measurements, DOE, and electrical compliance testing
- Strong written and verbal communication skills for technical reporting and cross-functional collaboration
- Bachelor's or Master's degree in Electrical Engineering, Computer Engineering, or related field
PREFERRED:
- Data center or hyperscale hardware experience
- Python or MATLAB for measurement automation and analysis
- Familiarity with simulation tools and thermal or mechanical effects on SI/PI
- Experience with PCIe (generations 4/5/6), Ethernet, DDR memory, SerDes links, SPI, and I²C
